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by gods
on Feb 11, 2000 at 00:06 UTC ( #3333=superdoc: print w/replies, xml ) Need Help??

Every perl programmer should understand the conditional operator, or the ternary "?:". It works much like an if-then-else statement. I'll give two examples of usage.

if ($condition) { $foo = $bar; } else { $foo = $baz; }
becomes:
$foo = $condition ? $bar : $baz;

if ($condition) { $baz = $foo; } else { $bar = $foo; }
becomes:
($condition ? $bar : $baz) = $foo;

Be careful with the second one, both $bar and $baz must be valid lvalues! That means that you must be able to assign values to them.

Updated to meet the expectations of the updated OP.


In reply to Re: Things every perl programmer should know? by Mr. Muskrat
in thread Things every perl programmer should know? by licking9Volts

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